A liftable hospital bed, comprising a bedplate base (1) and a bed leg rod (2), the upper end of the bed leg rod (2) being connected to a second roller device (7) which can slide in a track (8) on the bedplate base (1) a turning mechanism is also provided to change the included angle between the bed leg rod (2) and the bedplate base (1) in order to lift or lower the bedplate base (1), the turning mechanism including a connecting rod, which is hinged at the upper end thereof to the bedplate base (1), and a pushing mechanism (5) for pushing and turning the connecting rod (4) the lower end of the connecting rod (4) is fixedly bonded to a first connecting plate (6) which has a first sliding slot (61) and a second sliding slot (62) crossed with each other a first pin shaft (91) and a second pin shaft (92) on the bed leg rod (2) are slidably provided in the first sliding slot (61) and the second sliding slot (62). During lifting, the ground-touching end of the bed leg rod (2) can be maintained unmoved, so as to prevent the movement of the patients body.
